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HP HPE7-A01 Bundle

Exam Code: HPE7-A01

Exam Name HPE Network Campus Access Professional

Certification Provider: HP

Corresponding Certification: HPE Aruba Networking Certified Professional - Campus Access

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HP HPE7-A01 Practice Test 80

Question 790

A wireless voice call has low RSSI but the WLAN team tries to repair it solely with DSCP priority rules. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Set RF minimum performance criteria in voice deployment acceptance.
  2. Test slow legacy devices before changing radio minimum rates.
  3. Review every QoS remarking boundary after routing or security upgrades.
  4. Audit QoS trust only on verified voice-access ports.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which traffic priority cannot compensate for unusable wireless link quality. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

B:

That control is useful for a different failure, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. It would leave the present failure mode insufficiently addressed.

Question 791

A wireless network has high airtime consumption from low legacy data rates despite moderate user counts. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Use site-specific client capability tests before radio rate changes.
  2. Base growth plans on busy-hour traffic and application metrics.
  3. Audit QoS trust only on verified voice-access ports.
  4. Test slow legacy devices before changing radio minimum rates.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which low-rate transmissions consume disproportionate channel airtime for the same payload. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. It would leave the present failure mode insufficiently addressed.

Question 792

A data center uplink shows burst loss while average utilization stays below 40 percent. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Size AP uplinks against realistic aggregate usage rather than radio-rate labels.
  2. Test QoS under congestion rather than idle conditions alone.
  3. Run client walk tests after RF power policy changes.
  4. Trend queue drops and burst metrics rather than average throughput alone.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which short high-rate bursts can overflow queues despite acceptable long-term averages. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. It would leave the present failure mode insufficiently addressed.

Question 793

An engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Audit QoS trust only on verified voice-access ports.
  2. Run client walk tests after RF power policy changes.
  3. Base growth plans on busy-hour traffic and application metrics.
  4. Test QoS under congestion rather than idle conditions alone.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which oversized cells and client/AP power asymmetry can reduce airtime and roaming efficiency. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. It would leave the present failure mode insufficiently addressed.

Question 794

A campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Track concurrent voice capacity under representative user density.
  2. Test QoS under congestion rather than idle conditions alone.
  3. Test QoS behavior under full offered load, including lower-priority service.
  4. Report p95/p99 latency alongside mean in service-level monitoring.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which priority tagging cannot create unlimited radio airtime or switching buffer capacity. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

B:

That control is useful for a different failure, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. It would leave the present failure mode insufficiently addressed.

Question 795

A large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Test QoS under congestion rather than idle conditions alone.
  2. Size AP uplinks against realistic aggregate usage rather than radio-rate labels.
  3. Report p95/p99 latency alongside mean in service-level monitoring.
  4. Test QoS behavior under full offered load, including lower-priority service.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which the uplink throughput ceiling is smaller than the aggregate offered wireless load. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. It would leave the present failure mode insufficiently addressed.

Question 796

A switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Run client walk tests after RF power policy changes.
  2. Enforce QoS trust boundaries and classification tests on edge ports.
  3. Review every QoS remarking boundary after routing or security upgrades.
  4. Use site-specific client capability tests before radio rate changes.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which uncontrolled client markings let low-trust devices consume protected QoS queues. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when an engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. It would leave the present failure mode insufficiently addressed.

Question 797

A high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Use site-specific client capability tests before radio rate changes.
  2. Base growth plans on busy-hour traffic and application metrics.
  3. Run client walk tests after RF power policy changes.
  4. Report p95/p99 latency alongside mean in service-level monitoring.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which idle associations consume a different resource profile than active airtime-intensive clients. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. It would leave the present failure mode insufficiently addressed.

Question 798

A campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Test slow legacy devices before changing radio minimum rates.
  2. Review every QoS remarking boundary after routing or security upgrades.
  3. Trend queue drops and burst metrics rather than average throughput alone.
  4. Test QoS behavior under full offered load, including lower-priority service.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which unlimited strict priority may starve lower-priority but necessary traffic under sustained load. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a data center uplink shows burst loss while average utilization stays below 40 percent. It would leave the present failure mode insufficiently addressed.

Question 799

A WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Test QoS behavior under full offered load, including lower-priority service.
  2. Enforce QoS trust boundaries and classification tests on edge ports.
  3. Use site-specific client capability tests before radio rate changes.
  4. Report p95/p99 latency alongside mean in service-level monitoring.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which a raised mandatory/basic rate can prevent distant or legacy clients from maintaining reliable associations. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. It would leave the present failure mode insufficiently addressed.

Question 800

An application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Size AP uplinks against realistic aggregate usage rather than radio-rate labels.
  2. Report p95/p99 latency alongside mean in service-level monitoring.
  3. Review every QoS remarking boundary after routing or security upgrades.
  4. Test slow legacy devices before changing radio minimum rates.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which an acceptable mean obscures severe queueing spikes correlated with bulk traffic. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. It would leave the present failure mode insufficiently addressed.